Mounting the routing and socket cards can either be done by plastic clips or plastic screw/nuts. Both sets are included in the STK600 package. Install either the clips or the nuts to the motherboard depending on what solution you want to use.
The clips should be installed from the bottom side of the STK600 motherboard. When properly installed, two plastic locking springs holds the clip in place.
Align the clips with the white lines on the motherboard. The routing card could now be placed above the four clips. Make sure that the routing card has the correct orientation, i.e. the text should face upwards, and the white dot in the corner should match the one on the STK600. Press down the routing card (i.e. compress the spring loaded connector on the STK600) and turn the clip 45 degrees in the clockwise direction so that it aligns with the white line on the routing card. It is easiest to do two opposite clips before locking the two last.
Connecting the socket card is done in the same way as the routing card. Make sure that the clips align with the white line outside the clip holes on the routing card, then mount the socket card. The white spot on the socket card should align with the one on the routing card. Press down the socket card (i.e. compress the spring loaded connector on the socket card) and turn the clip 45 degrees in the clockwise direction until it aligns with the white line outside the clip hole. It is easiest to do two opposite clips before locking the two last.
Always rotate the clips within the 45 degrees window. Do not turn them around, that could cause the routing card below to un-hock from the clip.
Insert the nuts into the STK600 motherboard from the bottom side. When properly installed the two locking springs should hold the nut in place.
Place the routing card above the mother board, make sure that the whit spot in the corner matches the white spot on the motherboard. The small plastic taps on the ends of the spring loaded connectors should mate with the holes in the routing card. When the routing card is in the correct position, place the socket card onto the routing card with the white spot matching the one on the routing card. Make sure that the plastic taps on the connectors on the socket card mates with the routing card as well.
Insert the four screws, and tighten them firmly into the nuts.